JP6979629B2 - Wood veneer and its manufacturing method - Google Patents

Description

The present invention relates to a wooden decorative board having an excellent sense of authenticity and innocence, and a method for producing the same.

Conventionally, a wood veneer on which a wood grain pattern is printed or a veneer is attached to the surface of a base material such as MDF, plywood, or a resin board is known. It is preferable that this wooden veneer expresses a genuine feeling and an innocent feeling like a parquet floor. For example, in Patent Document 1, as a method of coloring concave portions such as joints formed on the surface of a decorative sheet or a decorative board, the surface and the concave portions of the decorative sheet are completely colored, and then the coloring agent on the surface of the decorative sheet is removed. How to do it is disclosed.

Japanese Unexamined Patent Publication No. 2005-313142

However, in the decorative sheet obtained by the method of Patent Document 1, the pattern on the surface of the decorative sheet from which the colorant has been removed and the pattern of the concave portion in which the colorant remains are different, and the pattern of the concave portion is simple. It becomes one and the design is low. Therefore, the decorative sheet obtained by the method of Patent Document 1 has a problem that it lacks a sense of authenticity and innocence.

Further, in the case of a wood veneer having a veneer attached to the surface, it is difficult to make the wood grain pattern colored in the concave portion continuous with the wood grain pattern of the veneer because the wood grain pattern of the veneer is different for each wood veneer. For this reason, in the case of the conventional wood veneer with a veneer attached to the surface, there is a problem that the feeling of authenticity and innocence is lacking.

Here, the "real feeling" means a sensation that gives the viewer the illusion that the pattern or pattern of the print layer formed by printing is made of the material that the pattern or pattern expresses. For example, when the pattern of the print layer is a wood grain pattern, the sensation that the viewer thinks that the wood grain pattern portion of the print layer formed by printing is made of wood is called "real feeling".

In addition, "innocence" means that the pattern or pattern of the print layer formed by printing is made of the material that the pattern or pattern expresses, and the member that expresses the pattern or pattern is the pattern or When the material that expresses the pattern is cut out, it means an illusion. For example, when the pattern of the print layer is a wood grain pattern, the sensation that the viewer thinks that the wood grain pattern portion of the print layer formed by printing is the cut out solid wood is called "innocence".

The present invention has been made in view of the above problems. An object of the present invention is to provide a wooden decorative board having an excellent sense of authenticity and innocence and a method for manufacturing the same.

In order to solve the above problems, the wood veneer according to the first aspect of the present invention has a concavo-convex non-solid base material having a concavo-convex shape on the surface and a wood grain pattern printed on the concavo-convex non-solid base material by inkjet printing. The surface printing layer wood grain curve, which comprises the surface printing layer of the above surface printing layer and represents the growth ring of the wood grain pattern of the surface printing layer, is a variation point of the surface shape curve indicating the surface shape of the unevenness of the uneven non-solid base material. It is characterized by having a surface printing layer wood grain curve turning point which is a turning point of the surface printing layer wood grain curve at the same position as a certain surface shape curve turning point.

Further, the method for manufacturing a wood veneer according to the second aspect of the present invention is the data of the wood grain pattern for forming the surface printing layer of the wood grain pattern on the flat plate material by inkjet printing, and the data of the wood grain pattern is acquired. On the surface of the standard flat lumber among the solid lumber curves formed on any cross section of the standard flat lumber by the growth ring of the standard lumber grain virtually created for the purpose of It is formed in a standard wood grain image data acquisition process for acquiring standard wood grain image data including a surface solid lumber curve that appears, a position of the surface solid lumber curve, and an arbitrary cross section of the standard flat lumber. The position of the lumber curve and the grain deviation data indicating the deviation are acquired, and the surface shape of the uneven non-solid base material having an uneven shape on the surface is measured to obtain the uneven non-convex shape. The surface solid lumber in the standard wood grain image data based on the surface shape measurement step of acquiring the surface shape measurement data including the surface shape curve of the uneven shape of the solid base material, the wood grain deviation data, and the surface shape measurement data. The grain curve is such that the wood grain curve of the solid surface lumber has a variation point at the same position as the variation point of the surface shape curve which is the variation point of the surface shape curve indicating the surface shape of the unevenness of the uneven non-solid base material. Concavo-convex correction wood grain image data creation step of creating unevenness correction wood grain image data including unevenness correction wood grain curve by image processing, and inkjet printing on the surface of the unevenness-shaped solid base material based on the unevenness correction wood grain image data. This is characterized by having an inkjet printing step of forming a surface printing layer of a wood grain pattern similar to the uneven wood grain image data on the surface of the uneven non-solid base material.

Further, the method for manufacturing a wood veneer according to the third aspect of the present invention is the data of the wood grain pattern for forming the surface printing layer of the wood grain pattern on the flat plate material by inkjet printing, and the data of the wood grain pattern is acquired. On the surface of the standard flat lumber among the solid lumber curves formed on any cross section of the standard flat lumber by the growth ring of the standard lumber grain virtually created for the purpose of It is formed in a standard wood grain image data acquisition process for acquiring standard wood grain image data including a surface solid lumber curve that appears, a position of the surface solid lumber curve, and an arbitrary cross section of the standard flat lumber. The lumber deviation data acquisition process for acquiring the grain deviation data indicating the position of the lumber curve and the deviation of the lumber curve, and the surface of the flat plate-shaped non-solid base material, the surface of the uneven-shaped non-solid base material having an uneven shape on the surface. Based on the surface shape data acquisition process for unevenness processing to acquire surface shape data for unevenness processing for processing into a shape that matches the shape, and the surface shape data for unevenness processing, the surface of the flat plate-shaped solid base material is said to be the same. The above-mentioned The surface shape curve variation point in which the surface solid wood grain curve in the standard wood grain image data is a variation point of the surface shape curve indicating the surface shape of the unevenness of the uneven surface solid wood grain curve. The unevenness correction wood grain image data creation step of creating unevenness correction wood grain image data including the unevenness correction wood grain curve by performing image processing so as to have a variation point at the same position as above, and the unevenness correction wood grain image data based on the unevenness correction wood grain image data. Having an inkjet printing step of forming a surface printing layer of a wood grain pattern similar to the unevenness correction wood grain image data on the surface of the uneven non-solid base material by inkjet printing on the surface of the non-solid base material. It is characterized by.

According to the wood veneer of the present invention, it is possible to provide a wood veneer having an excellent sense of authenticity and innocence. According to the method for producing a wooden decorative board of the present invention, it is possible to provide a method for producing a wooden decorative board having an excellent sense of authenticity and innocence.

It is a figure which shows an example of the wooden decorative board which concerns on embodiment. 1 (a) is a cross-sectional view of a wooden decorative board, and FIG. 1 (b) is a plan view seen from the direction A of FIG. 1 (a). It is a figure which shows the 1st manufacturing method of a wood decorative board. It is sectional drawing explaining the flat plate material. It is a figure explaining the standard wood grain image data acquired in the standard wood grain image data acquisition process. FIG. 4 (a) is a cross-sectional view of a standard flat plate-shaped solid wood virtually created for acquiring data of a wood grain pattern, and FIG. 4 (b) is a standard flat plate-shaped solid wood of FIG. 4 (a). This is an example of standard wood grain image data appearing on the surface of the material viewed from the B direction. It is a figure explaining the wood grain deviation data acquired in the wood grain deviation data acquisition process. 5 (a) is a schematic perspective view of a standard flat plate-shaped solid wood virtually created for acquiring data of a wood grain pattern, and FIG. 5 (b) is a region of FIG. 5 (a). It is an example of the grain deviation data of the solid wood grain curve of the growth ring represented by R1. Depends on the depth D (d ₁ , d ₂ , d ₃ , d ₄ ) in the thickness direction of the standard flat solid wood and the growth ring of the wood grain appearing on the cut surface of the standard flat wood cut at each depth D. It is a figure which shows the relationship with the solid wood grain curve. It is a figure explaining the wood grain deviation data acquired in the wood grain deviation data acquisition process. FIG. 7 (a) is a schematic perspective view of a standard flat plate-shaped solid wood virtually created for acquiring data of a wood grain pattern, and FIG. 7 (b) is a region of FIG. 7 (a). It is an example of the grain deviation data of the solid wood grain curve of the growth ring represented by R2. It is a figure explaining the unevenness correction wood grain image data created in the unevenness correction wood grain image data creation process. FIG. 8A is a cross-sectional view of an uneven non-solid base material having an uneven shape on the surface. FIG. 8B is an example of standard wood grain image data for printing FIG. 8A on the surface viewed from the C direction. FIG. 8C is an example of unevenness correction wood grain image data created based on standard wood grain image data and the like. It is sectional drawing explaining the flat plate-shaped solid base material. It is a figure which shows the 2nd manufacturing method of the wood decorative board.

[Wooden veneer]
The wood decorative board 1 according to the embodiment will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a wooden decorative board according to an embodiment. 1 (a) is a cross-sectional view of a wooden decorative board, and FIG. 1 (b) is a plan view seen from the direction A of FIG. 1 (a).

As shown in FIG. 1, the wood decorative board 1 includes a concavo-convex non-solid base material 12 having an uneven shape on the surface, a wood grain pattern surface printing layer 20 inkjet-printed on the concavo-convex non-solid base material 12. To prepare for.

The wood veneer 1 is used, for example, as a floor material, a wall material, a ceiling material, or the like.

<Concave and convex non-solid base material>
The uneven non-solid base material 12 having an uneven shape on the surface is a member that imparts strength to the wood decorative board 1 and forms a surface printing layer 20 printed on the surface thereof. The uneven non-solid base material 12 is a base material made of a material different from that of the solid wood. As the material of the uneven non-solid base material 12, for example, MDF (Medium Density Fiberboard), plywood, and resin plate are used.

As shown in FIG. 1 (a), the uneven non-solid base material 12 has an uneven shape on the surface. For example, the flat plate-shaped non-solid base material 11 shown in FIG. 9 is subjected to so-called name chestnut processing. It is formed by.

Since the uneven non-solid base material 12 has an uneven shape on the surface, it has a surface shape curve 17 which is a curve showing the uneven surface shape of the uneven non-solid base material 12. As the surface shape curve 17, a curve showing the surface shape in the cross section of the uneven solid base material 12 is usually used. As shown in FIG. 1A, the surface shape curve 17 has an inflection point 15 of the surface shape curve. It is preferable that a large number of surface shape curves 17 are usually present in the depth direction of the paper surface in FIG. 1 (a) to provide information on a bundle of surface shape curves 17. According to the bundle of the surface shape curve 17, it is possible to accurately reproduce the uneven shape of the surface of the uneven solid base material 12.

Here, the surface shape curve inflection point 15 means a point where the change in the value of the first derivative of the surface shape curve 17 changes discretely.

<Surface printing layer>
The surface printing layer 20 is a surface printing layer printed on the surface of the uneven non-solid base material 12, and has a wood grain pattern 25. FIG. 1B schematically shows the wood grain pattern 25 of the surface printing layer 20. The wood grain pattern 25 of the surface printing layer 20 is formed by inkjet printing. Further, among the inkjet printing, it is preferable to use the fine ink dot type inkjet printing because the wood grain pattern 25 can be expressed in high definition and the wood grain pattern 25 has an excellent real feeling.

As shown in FIG. 1 (b), the surface printing layer 20 has a surface printing layer wood grain curve 26 representing a growth ring of the wood grain pattern 25. FIG. 1B shows the surface printing layer wood grain curves 26a, 26b, 26c, 26d, and 26e. These surface printed layer wood grain curves 26 are located at the same positions as the surface shape curve inflection point 15 which is an inflection point of the surface shape curve 17 showing the uneven surface shape of the uneven non-solid base material 12. It has a surface printing layer wood grain curve inflection point 55, which is an inflection point of the curve 26.

Here, the surface printing layer wood grain curve inflection point 55 means a point where the change in the value of the first derivative of the surface printing layer wood grain curve 26 changes discretely.

As shown in FIG. 1 (b), the surface printed layer wood grain curve 26 is an inflection point of the surface printed layer wood grain curve 26 at the same position as the surface shape curve inflection point 15 of the uneven non-solid base material 12. Surface printing layer Wood grain curve The curve has an inflection point 55.

<Effect>
According to the wood veneer 1, it is possible to express a distorted wood grain pattern so as to match the concavo-convex shape of the uneven non-solid base material 12 having an uneven shape on the surface. Is obtained.

[Manufacturing method of wood veneer]
The wood decorative board 1 can be manufactured, for example, by the following manufacturing method. Hereinafter, the first manufacturing method and the second manufacturing method of the wood decorative board 1 will be described. FIG. 2 is a diagram showing a first method for manufacturing a wooden decorative board. FIG. 10 is a diagram showing a second method for manufacturing a wooden decorative board.

(First manufacturing method)
The first manufacturing method includes a standard wood grain image data acquisition step, a wood grain deviation data acquisition step, a surface shape measurement step, an unevenness correction wood grain image data creation step, and an inkjet printing step.

<Standard wood grain image data acquisition process>
In the first manufacturing method, a standard wood grain image data acquisition step is first performed.

The standard wood grain image data acquisition step is the data of the wood grain pattern 95 for forming the surface printing layer 20 of the wood grain pattern on the flat plate material 60 by inkjet printing, and the standard wood grain image data 94 including the surface solid wood grain curve 96 is obtained. This is the process of acquisition. The wood grain pattern 95 is a wood grain pattern in the standard wood grain image data 94 for forming the wood grain pattern 25 constituting the surface printing layer 20.

The flat plate member 60 is a flat plate-shaped member virtually created as an object to be inkjet printed. The flat plate member 60 may be created virtually and does not need to exist in reality. FIG. 3 is a cross-sectional view illustrating a flat plate material. FIG. 3 is a cross-sectional view of a flat plate member 60 cut along the thickness direction thereof. The flat plate member 60 is virtually created as a flat plate-shaped member having no unevenness on the surface as shown in FIG. The flat plate member 60 does not have to exist in reality, but may actually exist.

The surface solid wood grain curve 96 is a standard flat lumber 50 among the solid wood grain curves 56 formed on an arbitrary cross section of the standard flat lumber 50 by the growth ring 54 of the wood grain of the standard flat lumber 50. It is a curve that appears on the surface of.

The standard flat plate-shaped solid wood 50 is a flat plate-shaped solid wood virtually created for acquiring the data of the wood grain pattern 95. The standard flat solid wood 50 may be created virtually and does not need to exist in reality.

FIG. 4A shows a standard flat solid wood 50. FIG. 4A is a cross-sectional view of the standard flat plate-shaped solid wood 50 cut along the thickness direction thereof. The standard flat plate-shaped solid wood 50 is virtually created as a flat plate-shaped solid wood having no unevenness on the surface as shown in FIG. 4 (a). The standard flat plate-shaped solid wood 50 does not have to exist in reality, but may actually exist.

FIG. 4 is a diagram illustrating standard wood grain image data 94 acquired in the standard wood grain image data acquisition step. 4 (a) is a cross-sectional view of the standard flat solid wood 50, and FIG. 4 (b) is a standard appearing on the surface of the standard flat solid wood 50 when FIG. 4 (a) is viewed from the B direction. This is an example of wood grain image data 94.

The standard wood grain image data 94 is data of the wood grain pattern 95 appearing on the surface of the standard flat plate-shaped solid wood 50, and is data for forming the surface printing layer 20 of the wood grain pattern on the surface of the flat plate-shaped flat wood 60 by inkjet printing. Is. Therefore, the standard wood grain image data 94 is image data in which a natural wood grain pattern is printed when the standard flat wood grain image data 94 is printed as it is on the flat surface of the flat plate-shaped flat wood 60 as in the standard flat plate-shaped solid wood 50. There is.

Specifically, in the standard wood grain image data 94, as shown in FIG. 4 (b), a plurality of solid surface wood grain so as to have a natural wood grain pattern when the standard wood grain image data 94 is viewed from the front. Curve 96 (96a, 96b, 96c, 96d, 96e) is formed. As described above, the standard wood grain image data 94 includes the surface solid wood grain curve 96.

On the other hand, if the standard wood grain image data 94 is printed as it is on the surface of the uneven non-solid base material 12 having an uneven shape, a natural wood grain pattern cannot be printed. Therefore, in this manufacturing method, the standard wood grain image data is as described later so that a natural wood grain pattern is printed when the standard wood grain image data 94 is printed as it is on the flat surface of the surface of the uneven non-solid base material 12. It has a step of image processing 94.

In the standard wood grain image data acquisition step, the standard wood grain image data 94 is acquired from a database or the like in which the standard wood grain image data 94 is stored.

<Wood grain misalignment data acquisition process>
In the wood grain deviation data acquisition step, the wood grain deviation data 53 indicating the deviation between the position of the surface solid wood grain curve 96 and the position of the solid wood grain curve 56 formed on an arbitrary cross section of the standard flat wood grain 50 is acquired. It is a process to do.

FIG. 5 is a diagram illustrating the wood grain deviation data 53 acquired in the wood grain deviation data acquisition step. 5 (a) is a schematic perspective view of the standard flat plate-shaped solid wood 50A (50), and FIG. 5 (b) is a grain shift of the growth ring 54 represented by the region R1 of FIG. 5 (a). It is an example of data 53.

The growth ring 54 represented in the region R1 forms a solid wood grain curve 56 on any cross section of the standard flat wood 50A (50) perpendicular to its thickness direction. Further, a surface solid wood grain curve 96 is formed on the surface of the standard flat plate-shaped solid wood 50A. The surface solid wood grain curve 96 is a solid wood grain curve 56 in the case where an arbitrary cross section perpendicular to the thickness direction of the standard flat lumber 50A matches the surface of the standard flat lumber 50A. Matches 56. That is, the solid surface wood grain curve 96 is a solid wood grain curve 56 that appears on the surface of the standard flat wood grain 50A.

As shown in FIG. 5A, on the surface of the standard flat plate-shaped solid wood 50A, there is a surface solid wood grain curve 96 which is a solid wood grain curve 56 due to the growth ring 54 of the surface wood grain. Further, as shown in the region R1 of FIG. 5A, the growth ring 54 of the wood grain is usually in the direction perpendicular to the depth D direction as the depth in the thickness direction of the standard flat solid wood 50A changes. Move to. That is, when the standard flat plate-shaped solid wood 50A is cut with an arbitrary cross section perpendicular to the thickness direction and a cross section having a different depth, the cut surface has a surface solid wood grain curve 96 on the surface of the standard flat plate-shaped solid wood 50A. A solid wood grain curve 56 that has moved to a different position is observed. This situation is shown in FIG.

FIG. 6 shows the depth D (d ₁ , d ₂ , d ₃ , d ₄ ) of the standard solid wood 50A in the thickness direction and the depth D perpendicular to the thickness direction of the standard solid wood 50A. It is a figure which shows the relationship with the solid wood grain curve 56 appearing in the cut surface of the cut standard flat wood 50A. The depth d ₁ is a depth corresponding to the front surface of the standard flat solid wood 50A, and the depth d ₄ is a depth corresponding to the back surface of the standard flat solid wood 50A.

As shown in FIG. 6, the standard flat solid wood 50A in the figure on the left side of FIG. 6 is _{arbitrary at its depths d 1} , d ₂ , d ₃ , d ₄ and perpendicular to the thickness direction of the standard flat wood 50A. When cut in cross section, four cut surfaces as shown on the right side of FIG. 6 appear. Of the figures on the right side of FIG. 6, the uppermost figure (D = d ₁ ) is the surface of the standard flat wood grain 50A, and the solid wood grain curve 56 due to the grain growth ring 54 appearing on this surface. Is equal to the surface solid wood grain curve 96. Further, in the figure on the right side of FIG. 6, the bottom figure (D = d ₄ ) is a view of the back surface of the standard flat plate-shaped solid wood 50A as viewed from the front surface side.

As can be seen from the figure on the right side of FIG. 6, the solid wood grain curve 56 has _{depths d 2} , d ₃ , d _{4 from the top figure (D = d 1} , surface solid wood grain curve 96). As it gets deeper, it moves in the x direction in the figure as a whole like the solid wood grain curves 56α, 56β, 56γ. When the depth y of the paper surface in FIG. 6 is set to a constant value, the amount of deviation of the solid wood grain curve 56 in the figure due to the change in the depth D is defined as X. Then, the data showing the relationship between the depth D and the deviation amount X of the solid wood grain curve 56 by the same growth ring 54 is defined as the wood grain deviation data 53.

FIG. 5B is an example of grain deviation data 53 of the solid wood grain curve 56 formed by the growth ring 54 represented in the region R1 of the front end surface of the standard flat lumber 50A of FIG. 5A. Is. The growth ring 54 represented in the region R1 of the front end surface of the standard flat solid wood 50 is linear, and the displacement of the depth D is proportional to the displacement amount X, and is therefore shown in FIG. 5 (b). It has wood grain displacement data 53.

The grain deviation data 53 differs depending on the grain shape of the standard flat solid wood 50A. Another example of the wood grain deviation data 53 will be described. FIG. 7 is a diagram illustrating the wood grain deviation data 53 acquired in the wood grain deviation data acquisition step. FIG. 7A is a schematic perspective view of a standard flat plate-shaped solid wood 50B (50) different from the standard flat plate-shaped solid wood 50A.

7 (b) shows the grain deviation data of the solid wood grain curve 56 formed by the growth ring 54 represented in the region R2 of the front end surface of the standard flat lumber 50B (50) of FIG. 7 (a). This is an example of 53. The growth ring 54 represented in the region R2 of the front end surface of the standard flat plate-shaped solid wood 50 has a curved shape, and the displacement amount X increases exponentially with respect to the displacement of the depth D. It has the grain displacement data 53 shown in b).

In the wood grain deviation data acquisition step, the wood grain deviation data 53 is acquired from, for example, a database or the like in which the wood grain deviation data 53 is stored.

<Surface shape measurement process>
In the surface shape measuring step, the surface shape of the uneven non-solid base material 12 having an uneven shape on the surface is measured, and the surface shape measurement data including the uneven surface shape curve 17 of the uneven non-solid base material 12 is acquired. It is a process to do.

Specifically, as shown in FIG. 2A, the surface shape of the uneven non-solid base material 12 is measured by using the surface shape measuring unit 121 such as a laser displacement meter to measure the surface shape of the uneven solid base material 12. The surface shape measurement data including the surface shape curve 17 of the uneven shape of 12 is acquired.

<Concavo-convex correction wood grain image data creation process>
The unevenness correction wood grain image data creation step includes the unevenness correction wood grain curve 97 by image processing the surface solid wood grain curve 96 in the standard wood grain image data 94 based on the wood grain deviation data 53 and the surface shape measurement data. This is a step of creating unevenness correction wood grain image data 19.

The image processing of the solid surface wood grain curve 96 is an inflection of the surface solid wood grain curve 96 and the surface solid wood grain curve 96 showing the uneven surface shape of the uneven non-solid base material 12. This is a process of deforming the surface shape curve so as to have the inflection point 58 at the same position as the inflection point 15. That is, in the image processing of the solid surface wood grain curve 96, when the standard wood grain image data 94 in the solid surface wood grain curve 96 is printed as it is on the flat surface of the surface of the uneven solid wood base material 12, a natural wood grain pattern is obtained. This is the process of image processing so that it can be printed. By this image processing, the unevenness correction wood grain curve 97 is created from each surface solid wood grain curve 96, and the unevenness correction wood grain image data 19 including the unevenness correction wood grain curve 97 is created.

Specifically, as shown in FIG. 2B, unevenness is formed by image processing the solid surface wood grain curve 96 in the standard wood grain image data 94 based on the wood grain deviation data 53 and the surface shape measurement data. The unevenness correction wood grain image data 19 including the correction wood grain curve 97 is created.

The process shown in FIG. 2B will be described in detail with reference to FIG. 8 as appropriate. FIG. 8 is a diagram illustrating the unevenness-corrected wood grain image data 19 created in the unevenness-corrected wood grain image data creation step. FIG. 8A is a cross-sectional view of the uneven non-solid base material 12 having an uneven shape on the surface. FIG. 8B is an example of standard wood grain image data 94 for printing FIG. 8A on the surface viewed from the C direction. FIG. 8C is an example of unevenness correction wood grain image data 19 created based on standard wood grain image data 94 and the like.

In the unevenness correction wood grain image data creation step shown in FIG. 2B, first, the standard wood grain image data 94 acquired in the standard wood grain image data acquisition step is acquired. Next, based on the wood grain deviation data 53 and the surface shape measurement data, the standard wood grain image data 94 can be used to form the surface printing layer 20 that matches the uneven shape of the surface of the uneven solid base material 12. Image processing. Specifically, the surface solid lumber curve 96 in the standard wood grain image data 94 is inflection point of the surface shape curve 17 in which the surface solid lumber curve 96 shows the uneven surface shape of the uneven non-solid base material 12. Image processing is performed so that the inflection point 58 is located at the same position as the inflection point 15 of a certain surface shape curve. As a result, it is possible to create the unevenness correction wood grain image data 19 including the unevenness correction wood grain curve 97 in which the surface solid wood grain curve 96 is image-processed.

More specifically, in the unevenness correction wood grain image data creation step, first, the standard wood grain image data 94 shown in FIG. 8B is acquired. The standard wood grain image data 94 includes a plurality of solid surface wood grain curves 96 (96a, 96b, 96c, 96d, 96e). Next, the standard wood grain image data 94 shown in FIG. 8B is image-processed based on the wood grain deviation data 53 and the surface shape measurement data. In this image processing, the solid surface wood grain curve 96 in the standard wood grain image data 94 is an inflection point of the surface shape curve 17 showing the uneven surface shape of the uneven solid wood base material 12 shown in FIG. 8 (a). The surface shape curve is set so as to have the inflection point 58 at the same position as the inflection point 15. As a result, the unevenness correction wood grain image data 19 including the unevenness correction wood grain curve 97 formed by image processing the surface solid wood grain curve 96 in the standard wood grain image data 94 shown in FIG. 8B is created. FIG. 8C shows the unevenness correction wood grain image data 19.

<Inkjet printing process>
In the inkjet printing process, the unevenness-corrected wood grain image data 19 is used for inkjet printing on the surface of the uneven non-solid base material 12, so that the surface of the uneven non-solid base material 12 has the same wood grain as the unevenness-corrected wood grain image data 19. The surface printing layer 20 of the pattern is formed.

Specifically, as shown in FIG. 2C, by inkjet printing using the inkjet printing unit 105, the surface of the uneven non-solid base material 12 has a wood grain pattern similar to that of the unevenness correction wood grain image data 19. The surface printing layer 20 of the above is formed.

After going through the inkjet printing process, the wood decorative board 1 is obtained.

<Effect>
According to the first manufacturing method, it is possible to express a distorted wood grain pattern so as to match the uneven shape of the uneven non-solid base material 12 having an uneven shape on the surface. 1 is obtained.

(Second manufacturing method)
The second manufacturing method includes a standard wood grain image data acquisition process, a wood grain deviation data acquisition process, a surface shape data acquisition process for unevenness processing, an unevenness processing process, an unevenness correction wood grain image data creation process, and an inkjet printing process. , Have.

<Standard wood grain image data acquisition process>
In the second manufacturing method, a standard wood grain image data acquisition step is first performed. Since the standard wood grain image data acquisition step is the same as the standard wood grain image data acquisition step of the first manufacturing method, the description thereof will be omitted.

The uneven non-solid base material 12 in the description of the standard wood grain image data acquisition process of the first manufacturing method is the uneven non-solid base material in the uneven processing surface shape data acquisition step and the uneven processing step of the second manufacturing method. It is the same as the material 12.

<Wood grain misalignment data acquisition process>
Since the wood grain deviation data acquisition step is the same as the wood grain deviation data acquisition step of the first manufacturing method, the description thereof will be omitted.

<Surface shape data acquisition process for uneven processing>
The surface shape data acquisition step for unevenness processing is a surface for unevenness processing for processing the surface of the flat plate-shaped non-solid base material 11 into a shape that matches the surface shape of the uneven non-solid base material 12 having an uneven shape on the surface. This is the process of acquiring shape data.

The flat plate-shaped non-solid base material 11 is a flat plate-shaped non-solid base material. FIG. 9 is a cross-sectional view illustrating a flat plate-shaped solid base material. FIG. 9 is a cross-sectional view of the flat plate-shaped solid base material 11 cut along the thickness direction thereof. As shown in FIG. 9, the flat plate-shaped non-solid base material 11 is a flat plate-shaped member having no unevenness on the surface. The material of the flat plate-shaped non-solid base material 11 is the same as that of the uneven-shaped non-solid base material 12.

The surface shape data for unevenness processing is, for example, data including information of a surface shape curve 17 showing the surface shape of the unevenness of the uneven solid substrate 12 shown in FIG. 8A. The surface shape data for unevenness processing is usually a bundle of surface shape curves 17 in which a large amount of information on the surface shape curve 17 exists in the depth direction of the paper surface in FIG. 8A. According to the surface shape data for unevenness processing including the bundle of the surface shape curve 17, the flat plate-shaped non-solid base material 11 is precisely shaped to match the uneven surface shape of the surface of the uneven-shaped non-solid base material 12. It becomes possible to process.

In the surface shape data acquisition step for unevenness processing, the surface shape data for unevenness processing is acquired from a database or the like in which the surface shape data for unevenness processing is stored.

<Concavo-convex processing process>
In the uneven processing step, the surface of the flat plate-shaped non-solid base material 11 is processed into a shape that matches the surface shape of the uneven non-solid base material 12 based on the surface shape data for uneven processing, and the uneven shape non-solid base material 12 is processed. Is the process of producing.

Specifically, as shown in FIG. 10A, the surface of the flat plate-shaped solid base material 11 is processed by using the uneven processing portion 123 of a laser processing machine or the like to obtain the uneven solid base material 12. Make.

<Concavo-convex correction wood grain image data creation process>
In the unevenness correction wood grain image data creation step, the unevenness correction wood grain curve 97 is obtained by image processing the surface solid wood grain curve 96 in the standard wood grain image data 94 based on the grain deviation data 53 and the surface shape data for unevenness processing. This is a step of creating the unevenness correction wood grain image data 19 including the unevenness correction.

The unevenness correction wood grain image data creation step of the second manufacturing method is the same process except that the surface shape data for unevenness processing is used in place of the surface shape measurement data in the unevenness correction wood grain image data creation step of the first manufacturing method. Therefore, the description is omitted.

<Inkjet printing process>
Since the inkjet printing process is the same as the inkjet printing process of the first manufacturing method, the description thereof will be omitted.

<Effect>
According to the second manufacturing method, it is possible to express a distorted wood grain pattern so as to match the uneven shape of the uneven non-solid base material 12 having an uneven shape on the surface. 1 is obtained.

Although the contents of the present embodiment have been described above with reference to the embodiments, it is obvious to those skilled in the art that the present embodiment is not limited to these descriptions and can be modified and improved in various ways. be.

1 Wood veneer 11 Flat plate-shaped non-solid base material 12 Concavo-convex non-solid base material 15 Surface shape curve inflection point 17 Surface shape curve 19 Concavo-convex correction wood grain image data 20 Surface printing layer 25 Wood grain pattern (wood grain pattern of surface printing layer)
26 Surface printing layer Wood grain curve 50, 50A, 50B Standard flat wood grain 53 Wood grain deviation data 54 Growth ring 56 Solid wood wood grain curve 58 Inflection point 60 Flat wood 94 Standard wood grain image data 95 Wood grain pattern (Standard wood grain image data wood grain Pattern)
96 Solid surface wood grain curve 97 Concavo-convexity correction wood grain curve 105 Inkjet printing unit 115 Points that change discretely 117 Curve that differentiates the surface shape curve once 121 Surface shape measurement unit (laser displacement meter)
123 Concavo-convex processing part (laser processing machine)

Claims (3)

An uneven non-solid base material with an uneven shape on the surface,
The surface printing layer of the wood grain pattern inkjet-printed on this uneven non-solid base material,
Equipped with
The surface printing layer wood grain curve representing the growth ring of the wood grain pattern of the surface printing layer is the same as the surface shape curve inflection point which is the inflection point of the surface shape curve showing the surface shape of the unevenness of the uneven non-solid base material. A wood veneer characterized by having an inflection point of the surface printing layer wood grain curve at a position, which is an inflection point of the surface printing layer wood grain curve. It is the data of the wood grain pattern for forming the surface printing layer of the wood grain pattern on the flat plate material by inkjet printing, and it is the growth ring of the wood grain of the standard flat wood grain that was virtually created to acquire the data of the wood grain pattern. Acquires standard wood grain image data including a surface solid wood grain curve which is a curve appearing on the surface of the standard flat wood grain curve among the solid wood grain curves formed on an arbitrary cross section of the standard flat wood grain material. Standard wood grain image data acquisition process and
A wood grain data acquisition step for acquiring wood grain deviation data indicating a deviation between the position of the surface solid wood grain curve and the position of the solid wood grain curve formed on an arbitrary cross section of the standard flat wood.
A surface shape measurement step of measuring the surface shape of an uneven non-solid base material having an uneven shape on the surface and acquiring surface shape measurement data including the surface shape curve of the uneven shape of the uneven non-solid base material.
Based on the wood grain deviation data and the surface shape measurement data, the surface solid wood grain curve in the standard wood grain image data is shown, and the surface solid wood grain curve shows the surface shape of the unevenness of the uneven solid wood base material. Concavo-convexness correction wood grain image data that creates unevenness correction wood grain image data including unevenness correction wood grain curve by image processing so that the surface shape curve variation point is at the same position as the surface shape curve variation point. Creation process and
By inkjet printing on the surface of the uneven non-solid base material based on the unevenness-corrected wood grain image data, a surface printing layer of a wood grain pattern similar to the unevenness-corrected wood grain image data is printed on the surface of the uneven non-solid base material. And the inkjet printing process to form
A method for manufacturing a wooden decorative board, which is characterized by having. It is the data of the wood grain pattern for forming the surface printing layer of the wood grain pattern on the flat plate material by inkjet printing, and it is the growth ring of the wood grain of the standard flat wood grain that was virtually created to acquire the data of the wood grain pattern. Acquires standard wood grain image data including a surface solid wood grain curve which is a curve appearing on the surface of the standard flat wood grain curve among the solid wood grain curves formed on an arbitrary cross section of the standard flat wood grain material. Standard wood grain image data acquisition process and
A wood grain data acquisition step for acquiring wood grain deviation data indicating a deviation between the position of the surface solid wood grain curve and the position of the solid wood grain curve formed on an arbitrary cross section of the standard flat wood.
Acquisition of surface shape data for uneven processing for processing the surface of a flat plate-shaped non-solid base material into a shape that matches the surface shape of the uneven non-solid base material having an uneven shape on the surface Acquisition of surface shape data for uneven processing Process and
Based on the surface shape data for uneven processing, the surface of the flat plate-shaped non-solid base material is processed into a shape that matches the surface shape of the uneven non-solid base material to produce the uneven non-solid base material. Processing process and
Based on the grain deviation data and the surface shape data for unevenness processing, the solid surface wood grain curve in the standard wood grain image data is obtained, and the solid surface wood grain curve is the surface shape of the unevenness of the uneven solid wood substrate. Surface shape curve that is a variation point of the surface shape curve that shows Image data creation process and
By inkjet printing on the surface of the uneven non-solid base material based on the unevenness-corrected wood grain image data, a surface printing layer of a wood grain pattern similar to the uneven wood grain image data is printed on the surface of the uneven non-solid base material. And the inkjet printing process to form
A method for manufacturing a wooden decorative board, which is characterized by having.

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